uvm_fault(0xfffffd8061b9f5e0, 0x0, 0, 1) -> e fatal page fault in supervisor mode trap type 6 code 0 rip ffffffff831d8d48 cs 8 rflags 10207 cr2 0 cpl 0 rsp ffff80003c4538d0 gsbase 0xffff8000299edff0 kgsbase 0x0 panic: trap type 6, code=0, pc=ffffffff831d8d48 Starting stack trace... panic(ffffffff833a047a) at panic+0x1d0 sys/kern/subr_prf.c:229 kerntrap(ffff80003c453820) at kerntrap+0x30b alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff80000149d000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(21e5f,81,2000,ffff80003bc1b500) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(21e5f,81,2000,ffff80003bc1b500) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003c4539d0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80665651f8,81,fffffd80097fb4e0,ffff80003bc1b500) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806654b220,ffff80003bc1b500) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806654b220,ffff80003bc1b500) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806654b220,ffff80003bc1b500) at fdrop+0x121 sys/kern/kern_descrip.c:1267 closef(fffffd806654b220,ffff80003bc1b500) at closef+0x192 sys/kern/kern_descrip.c:1251 fdfree(ffff80003bc1b500) at fdfree+0x116 sys/kern/kern_descrip.c:1182 exit1(ffff80003bc1b500,b,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003bc1b500,ffff80003c453d40,ffff80003c453c90) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c453d40) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c453d40) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x74d79dfcf9e0, count: 242 End of stack trace. WARNING: SPL NOT LOWERED ON TRAP EXIT 4 0 Stopped at proc_trampoline+0xc7: movl $0,%gs:0x688 TID PID UID PRFLAGS PFLAGS CPU COMMAND 323195 74576 0 0 0 0 syz-executor *404882 13560 0 0 0 1 syz-executor proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7ef328420040, count: 14 https://www.openbsd.org/ddb.html describes the minimum info required in bug reports. Insufficient info makes it difficult to find and fix bugs. ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: uvm_fault(0xfffffd8061b9f5e0, 0x0, 0, 1) -> e ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7ef328420040, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff800037407650 rbx 0 rdx 0 rcx 0xffff80003bc1b268 rax 0x2a r8 0xffff800037407580 r9 0x1 r10 0xa868d440ddb0b66d r11 0x9a3f1f8e71ccce6a r12 0 r13 0xffffffff8195c218 Xdoreti+0x18 r14 0 r15 0 rip 0xffffffff8163a4c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff8000374075d0 ss 0 proc_trampoline+0xc7: movl $0,%gs:0x688 ddb{1}> show proc PROC (syz-executor) tid=404882 pid=13560 tcnt=3 stat=onproc flags process=0 proc=0 runpri=86, usrpri=86, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a37cfc0,0xffff80003bc1a818 process=0xffff80002e8109f0 user=0xffff800037402000, vmspace=0xfffffd8061b9fd80 estcpu=36, cpticks=2, pctcpu=0.0, user=2, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 74576 323195 28278 0 7 0 syz-executor *13560 404882 52454 0 7 0 syz-executor 13560 89084 52454 0 3 0x4000000 clonelk syz-executor 13560 416220 52454 0 2 0x4000000 syz-executor 49876 33981 81656 0 3 0x80 nanoslp syz-executor 49876 76359 81656 0 3 0x4000080 kqsel syz-executor 49876 458457 81656 0 3 0x4000080 fsleep syz-executor 11169 384717 58231 0 3 0x80 nanoslp syz-executor 11169 491954 58231 0 3 0x4000080 pppxread syz-executor 11169 234669 58231 0 3 0x4000080 fsleep syz-executor 11169 471177 58231 0 3 0x4000080 fsleep syz-executor 73954 274038 1 0 3 0x80 nanoslp init 33648 40135 0 0 3 0x14200 acct acct 48200 85262 0 0 3 0x14280 nfsidl nfsio 49991 55826 0 0 3 0x14280 nfsidl nfsio 44046 303458 0 0 3 0x14280 nfsidl nfsio 52396 190043 0 0 3 0x14280 nfsidl nfsio 42119 221740 0 0 3 0x14280 nfsidl nfsio 51949 254497 0 0 3 0x14280 nfsidl nfsio 14142 252806 0 0 3 0x14280 nfsidl nfsio 75715 312764 0 0 3 0x14280 nfsidl nfsio 17597 97319 0 0 3 0x14280 nfsidl nfsio 78985 139226 0 0 3 0x14280 nfsidl nfsio 71137 9781 0 0 3 0x14280 nfsidl nfsio 94487 133828 0 0 3 0x14280 nfsidl nfsio 57122 81639 0 0 3 0x14280 nfsidl nfsio 93963 272623 0 0 3 0x14280 nfsidl nfsio 74301 18129 0 0 3 0x14280 nfsidl nfsio 35824 189494 0 0 3 0x14280 nfsidl nfsio 689 34049 0 0 3 0x14280 nfsidl nfsio 27303 430654 0 0 3 0x14280 nfsidl nfsio 62356 380919 0 0 3 0x14280 nfsidl nfsio 59433 103839 0 0 3 0x14280 nfsidl nfsio 52103 146746 0 0 3 0x14200 bored sosplice 52454 456256 18800 0 3 0x82 nanoslp syz-executor 81656 286435 18800 0 3 0x82 nanoslp syz-executor 25193 104850 18800 0 3 0x82 nanoslp syz-executor 28278 163424 18800 0 3 0x82 nanoslp syz-executor 2081 131786 18800 0 3 0x82 nanoslp syz-executor 38894 357884 18800 0 3 0x2 biowait syz-executor 58231 66567 18800 0 3 0x82 nanoslp syz-executor 56410 120157 18800 0 3 0x82 nanoslp syz-executor 18800 474557 37167 0 3 0x82 kqread syz-executor 37167 439957 31722 0 3 0x10008a sigsusp ksh 31722 367268 43176 0 3 0x98 kqread sshd-session 43176 9904 28257 0 3 0x92 kqread sshd-session 28257 290744 1 0 3 0x88 kqread sshd 4178 330276 1079 74 3 0x1100092 bpf pflogd 1079 151994 1 0 3 0x80 sbwait pflogd 34778 156991 73821 73 3 0x1100090 kqread syslogd 73821 225558 1 0 3 0x100082 sbwait syslogd 71918 400790 1 0 3 0x100080 kqread resolvd 86947 286720 85155 77 3 0x100092 kqread dhcpleased 54310 436353 85155 77 3 0x100092 kqread dhcpleased 85155 343343 1 0 3 0x80 kqread dhcpleased 98273 298489 0 0 3 0x14200 pause smr 85231 130707 0 0 2 0x14200 zerothread 86576 359582 0 0 3 0x14200 aiodoned aiodoned 27516 475823 0 0 3 0x14200 syncer update 83594 420163 0 0 3 0x14200 cleaner cleaner 78829 4976 0 0 3 0x14200 reaper reaper 22675 59611 0 0 3 0x14200 pgdaemon pagedaemon 5644 397450 0 0 3 0x14200 bored viomb 87903 137384 0 0 3 0x40014200 acpi0 acpi0 63881 441389 0 0 3 0x40014200 idle1 85611 477049 0 0 3 0x14200 bored softnet7 26166 87051 0 0 3 0x14200 bored softnet6 21464 332870 0 0 3 0x14200 bored softnet5 46723 462718 0 0 3 0x14200 bored softnet4 96826 55549 0 0 3 0x14200 bored softnet3 70116 6268 0 0 3 0x14200 bored softnet2 26543 408828 0 0 3 0x14200 bored softnet1 33526 478565 0 0 2 0x14200 softnet0 89018 331809 0 0 2 0x40014200 systqmp 44812 302323 0 0 3 0x14200 bored systq 27812 79841 0 0 3 0x14200 tmoslp softclockmp 71247 298006 0 0 3 0x40014200 tmoslp softclock 39404 123985 0 0 3 0x40014200 idle0 1 329056 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 38894 (syz-executor) thread 0xffff80002a2b9ca0 (357884) exclusive rrwlock inode r = 0 (0xfffffd806e0b6248) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xa3 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vget+0x2a2 sys/kern/vfs_subr.c:693 #6 ufs_ihashget+0x185 sys/ufs/ufs/ufs_ihash.c:98 #7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1203 #8 ufs_lookup+0x1a36 sys/ufs/ufs/ufs_lookup.c:478 #9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x93a sys/kern/vfs_lookup.c:566 #11 namei+0x7ca sys/kern/vfs_lookup.c:250 #12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1864 #13 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #13 syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806ea39368) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xa3 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vget+0x2a2 sys/kern/vfs_subr.c:693 #6 cache_lookup+0x351 sys/kern/vfs_cache.c:222 #7 ufs_lookup+0x1e3 sys/ufs/ufs/ufs_lookup.c:160 #8 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #9 vfs_lookup+0x93a sys/kern/vfs_lookup.c:566 #10 namei+0x7ca sys/kern/vfs_lookup.c:250 #11 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1864 #12 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #12 syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 #13 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10324 11193K 11278K 166960K 12706 0 pcb 18 14K 14K 166960K 206 0 rtable 187 8K 10K 166960K 442 0 pf 39 18K 67486K 166960K 163 0 ifaddr 38 6K 8K 166960K 102 0 ifgroup 59 2K 3K 166960K 171 0 sysctl 4 1K 9K 166960K 16 0 counters 70 37K 38K 166960K 182 0 ioctlops 0 0K 4K 166960K 1621 0 iov 0 0K 16K 166960K 47 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1433 90K 90K 166960K 2432 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 2K 6K 166960K 16 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 39 0 dirhash 12 2K 2K 166960K 30 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 236K 166960K 1047 0 sigio 0 0K 0K 166960K 36 0 proc 64 99K 163K 166960K 673 0 subproc 72 4K 4K 166960K 82 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 1 0K 0K 166960K 180 0 in_multi 70 5K 7K 166960K 140 0 ether_multi 1 0K 0K 166960K 5 0 mrt 1 0K 0K 166960K 5 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 229 1023K 1023K 166960K 229 0 exec 0 0K 1K 166960K 492 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 2 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 233 171K 194K 166960K 11520 0 UVM aobj 17 2K 2K 166960K 17 0 pinsyscall 41 82K 104K 166960K 2178 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 47 0 NDP 13 0K 1K 166960K 68 0 temp 82 8648K 8716K 166960K 31132 0 kqueue 14 22K 30K 166960K 207 0 SYN cache 2 8K 16K 166960K 3 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 26 0 0 1 0 1 1 0 8 0 rtpcb 120 111 0 108 1 0 1 1 0 8 0 rtentry 176 145 0 72 5 0 5 5 0 8 0 unpcb 144 789 0 770 12 8 4 6 0 8 3 syncache 336 11 0 11 4 3 1 1 0 8 1 tcpcb 736 301 0 297 7 6 1 7 0 8 0 arp 128 18 0 8 1 0 1 1 0 8 0 inpcb 328 1078 0 1068 14 10 4 7 0 8 2 nd6 144 26 0 9 1 0 1 1 0 8 0 pkpcb 40 8 0 8 3 3 0 1 0 8 0 kcovpl 48 9 0 1 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 1 0 1 0 8 0 ppxss 1192 41 0 41 2 1 1 1 0 8 1 pppxif 1504 9 0 9 3 2 1 1 0 8 1 pfstscr 40 3 0 3 1 1 0 1 0 8 0 pffrag 232 10 0 2 1 0 1 1 0 482 0 pffrnode 88 8 0 0 1 0 1 1 0 8 0 pffrent 40 13 0 5 1 0 1 1 0 8 0 pfosfp 40 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfrktable 1344 3 0 3 1 1 0 1 0 8 0 pfanchor 1288 1 0 1 1 1 0 1 0 8 0 pftag 88 2 0 0 1 0 1 1 0 8 0 pfstitem 24 107 0 35 1 0 1 1 0 8 0 pfstkey 128 112 0 40 3 0 3 3 0 8 0 pfstate 384 110 0 38 8 0 8 8 0 8 0 pfrule 1344 33 0 28 2 1 1 2 0 8 0 rttmr 136 2 0 2 1 1 0 1 0 8 0 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 604 0 261 31 5 26 30 0 8 1 art_table 40 607 0 261 5 0 5 5 0 8 0 art_node 32 145 0 81 1 0 1 1 0 8 0 sysvmsgpl 40 5 0 3 1 0 1 1 0 8 0 semupl 112 7 0 7 3 3 0 1 0 8 0 semapl 112 37 0 27 1 0 1 1 0 8 0 shmpl 112 14 0 0 1 0 1 1 0 8 0 dirhash 1024 29 0 12 3 0 3 3 0 8 0 dino2pl 256 3432 0 1920 96 0 96 96 0 8 0 ffsino 296 3432 0 1920 117 0 117 117 0 8 0 nchpl 144 4895 0 3194 64 0 64 64 0 8 0 rtmask 32 8 0 8 3 3 0 1 0 8 0 uvmvnodes 80 4151 0 0 85 0 85 85 0 8 0 vnodes 216 4151 0 0 231 0 231 231 0 8 0 namei 1024 17507 0 17507 4 3 1 2 0 8 1 percpumem 16 106 0 56 1 0 1 1 0 8 0 pfiaddrpl 120 4 0 4 1 1 0 1 0 8 0 kstatmem 264 104 0 74 3 0 3 3 0 8 0 scsiplug 72 3 0 3 2 2 0 1 0 8 0 scxspl 216 33129 0 33128 13 11 2 8 1 8 1 plimitpl 152 319 0 302 1 0 1 1 0 8 0 sigapl 424 1366 0 1291 9 0 9 9 0 8 0 knotepl 120 622 0 0 19 0 19 19 0 8 0 kqueuepl 224 433 0 423 6 5 1 5 0 8 0 pipepl 344 198 0 171 3 0 3 3 0 8 0 fdescpl 528 1321 0 1290 3 0 3 3 0 8 0 filepl 160 9013 0 8731 28 10 18 18 0 8 5 lockfpl 104 592 0 590 2 0 2 2 0 8 1 lockfspl 48 255 0 253 1 0 1 1 0 8 0 sessionpl 144 31 0 23 1 0 1 1 0 8 0 pgrppl 48 82 0 66 1 0 1 1 0 8 0 ucredpl 104 1524 0 1509 1 0 1 1 0 8 0 zombiepl 144 1605 0 1602 2 1 1 1 0 8 0 processpl 1248 1366 0 1291 7 0 7 7 0 8 0 procpl 664 3022 0 2940 10 2 8 9 0 8 0 sosppl 168 6 0 6 3 2 1 1 0 8 1 sockpl 752 2109 0 2077 31 21 10 17 0 8 6 mcl64k 65536 18 0 0 3 0 3 3 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 111 0 0 14 0 14 14 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 33 0 0 4 0 4 4 0 8 0 mtagpl 96 141 0 0 4 0 4 4 0 8 0 mbufpl 256 343 0 0 21 0 21 21 0 8 0 bufpl 280 13503 0 7360 440 0 440 440 0 8 0 anonpl 32 11070 0 0 90 0 90 90 0 246 0 amapchunkpl 152 38442 0 37965 49 20 29 31 0 158 7 amappl16 200 5901 0 5865 38 25 13 27 0 8 1 amappl15 192 35 0 35 1 1 0 1 0 8 0 amappl14 184 129 0 117 1 0 1 1 0 8 0 amappl13 176 32 0 32 1 1 0 1 0 8 0 amappl12 168 1985 0 1955 4 1 3 3 0 8 0 amappl11 160 52 0 38 1 0 1 1 0 8 0 amappl10 152 7 0 7 1 1 0 1 0 8 0 amappl9 144 250 0 250 1 1 0 1 0 8 0 amappl8 136 34 0 32 1 0 1 1 0 8 0 amappl7 128 117 0 106 1 0 1 1 0 8 0 amappl6 120 217 0 213 1 0 1 1 0 8 0 amappl5 112 126 0 115 1 0 1 1 0 8 0 amappl4 104 325 0 305 1 0 1 1 0 8 0 amappl3 96 7569 0 7463 4 0 4 4 0 8 0 amappl2 88 712 0 651 2 0 2 2 0 8 0 amappl1 80 13619 0 13041 17 2 15 15 0 8 0 amappl 88 10610 0 10446 5 0 5 5 0 92 0 dma32768 32768 1 0 1 1 1 0 1 0 8 0 dma4096 4096 2 0 2 2 2 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 7 0 7 2 2 0 1 0 8 0 dma128 128 254 0 254 2 2 0 1 0 8 0 dma64 64 6 0 6 1 1 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 72 16 0 0 1 0 1 1 0 8 0 uaddrrnd 24 1321 0 1290 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1321 0 1290 1 0 1 1 0 8 0 vmmpekpl 168 12544 0 12494 3 0 3 3 0 8 0 vmmpepl 168 92566 0 90602 116 18 98 109 0 357 5 vmsppl 488 1320 0 1290 6 1 5 5 0 8 0 rwobjpl 80 31992 0 26924 105 1 104 104 0 8 0 pdppl 4096 2650 0 2580 108 34 74 86 0 8 4 pvpl 32 20015 0 0 165 3 162 162 0 265 0 pmappl 256 1320 0 1290 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 310 0 57 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff8376fff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff83942d80) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff83942d80) at __mp_lock+0x192 sys/kern/kern_lock.c:165 softintr_dispatch(2) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(2) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:847 Xsofttty() at Xsofttty+0x27 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc intr_handler(ffff80002e873a20,ffff800000079a80) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 kd_curproc sys/dev/kcov.c:585 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 sys/dev/kcov.c:153 __mp_lock(ffffffff83942d80) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff83942d80) at __mp_lock+0x1a3 sys/kern/kern_lock.c:165 syscall(ffff80002e873c00) at syscall+0xaf4 mi_syscall sys/sys/syscall_mi.h:175 [inline] syscall(ffff80002e873c00) at syscall+0xaf4 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7df956301d40, count: 1 ddb{0}> trace x86_ipi_db(ffffffff8376fff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff83942d80) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff83942d80) at __mp_lock+0x192 sys/kern/kern_lock.c:165 softintr_dispatch(2) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(2) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:847 Xsofttty() at Xsofttty+0x27 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc intr_handler(ffff80002e873a20,ffff800000079a80) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 kd_curproc sys/dev/kcov.c:585 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 sys/dev/kcov.c:153 __mp_lock(ffffffff83942d80) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff83942d80) at __mp_lock+0x1a3 sys/kern/kern_lock.c:165 syscall(ffff80002e873c00) at syscall+0xaf4 mi_syscall sys/sys/syscall_mi.h:175 [inline] syscall(ffff80002e873c00) at syscall+0xaf4 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7df956301d40, count: -14 ddb{0}> machine ddbcpu 1 Stopped at proc_trampoline+0xc7: movl $0,%gs:0x688 proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7ef328420040, count: 14 ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7ef328420040, count: -1